Electric water-heater.



No. 696g599. Patented Apr. I, I902.

M. H. SHUENBERG & H. LEVY. ELECTRIC WATER HEATER.

. (Application filed Apr. 10, 1901.y (No Model.)

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MILTON H. SHOENBERG AND HENRI LEVY, OF SAN FRANCISCO, CALIFORNIA.

ELECTRlC WATER-HEATER.

EEECEFIGA'IION forming part of Letters Application filed April 10. 1901-To (0Z5 whom it may concern.-

Be it known that we, MILTON H. SHOENBERG and HENRI LEVY, citizens of theUnited States, residing in the city and county of San Francisco, Stateof California, have invented an Improvement in Electric ater-Heaters;and we hereby declare the following to be a full, clear, and exactdescription of the same.

0 urinvention relates to an apparatus which is especially designed forthe rapid and continuous heating of flowing water; and it consists in acirculating apparatus, means for supplying the water thereto, means forelectrically heating the current passing through the supply tube, meansfor continuously drawing off the flowing and heated water, and areservoir connected with the apparatus in which a quantity may be storedwhen not being drawn.

The invention further comprises details of construction which will bemore fully explained by reference to the accompanyin drawing, in whichthe figure is a vertical sec tion through the heater.

The object of our invention is to provide a means for heating bodies ofwater either to be stored by circulating the water continuously throughthe storage vessel or to heat the water as it flows from the source ofsupply to the discharge, so that a continuous stream of hot water can bedrawn.

As illustrated in the present drawing, A is a reservoir for containing asupplyof water, and it may be made of any suitable form or size. Throughthe bottom of this reservoir extend the pipes 2 and 3, which are unitedby a U-shaped coupling at the bottom, as at 4, and these pipes andconnected parts may be contained in an exterior inclosing case, as 5.One of the pipes 3 in this construction is made longer than the other,extending to a corresponding greater height into the vessel A, so thatwhen water is heated in the pipe 3 it rises toward the upper part of thevessel, and the cooler water within the vessel will pass down throughthe pipe 2, thus keeping up a con stant circulation. This illustrates avery satisfactory form of the devicegbut it will be manifest that thepipes may be otherwise arranged and connected in any manner to produce aconstant circulation of water through the pipes and chamber,

Patent No. 696,599, dated April 1, 1902.

Serial No, 55,146. (No model.)

A discharge-cock 7 connects with the pipe 3 below the reservoir A, andwhen it is desired to draw the water continuously by opening this cockwhile the heating device is in operation the water may be drawn throughthe cock without circulating through the chamher, the water in this caseentering through the supply-pipe, passing through the pipes 2 and 3,where it is subjected to the action of the heater, and thence passingout through the discharge.

The heating device consists of a wire 8 of small diameter, which iswound in coils about the pipe 3, the latter being covered with aninsulating-coating of mica or other equivalent insulating substance.This wire is made fine, so as to provide for a high resistance to theelectrical current which is passed through it, and this produces such adegree of heat as will heat the water during its passage through theportion of the pipe which is surrounded by the heating-coil. 7e are thusenabled to make the coil fine and of high resistance without danger ofburning it out or heating it to a red or other undue heat, because thecoil is in close contact with the water-pipe, and its temperature cannever be raised very much above that of the flowing water by anyelectrical current which can be passed through it. \Ve prefer to windthis portion of the tube with a single coil of wire, the upper end ofwhich is secured by a screw-clamp 9, between which and the insulatedtube 3 the upper end of the wire is secured by means of a screw, as at10, the other end of the bars forming the clamp clasping the pipe '23and are insulated there from by mica or other insulating material, as at11. The lower end of the wire is correspondingly secured in place by asimilar pair of screw-clamps 12, between which and the insulation of thetube 3 the lower end of the wire is clamped, and the other ends of theclampingbars clasp the tube 2 with a similar insulating material 11,interposed, as shown, at the upper portion. The electrical connectionbeing made substantially as shown, the current will pass through thecoil 8, and thus heat the apparatus, as before stated.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. The combination in an electrical heater of a pipe having legs ofunequal length one of said legs serving as a water-inlet and the otheras a water-outlet said outlet having a controlling-cock; an exteriorinsulation for said pipe; a coil of wire having high resistance, woundin contact with the insulating-surface clamps extending between the legsof the pipe, having one end to secure the ends of the coil against theinsulating-surface and the other end extending to and clamped againstand insulated from the opposite leg of the coil; and electricalconnections with the coil.

2. An electrical water-heater, consisting of a pipe, an insulatinginclosing material, a single coil of high-resistance wire, wound incontact with the insulating-covered pipe, a supply through which wateris delivered into one end of said pipe,-and a controlled discharge fromthe opposite end, clamps, one end of which secures the ends of the coilagainst the insulating surface, the opposite ends clamping thesupply-pipe and having an insulating material between them and thesupply-pipe screws by which said clamps are fixed or loosened,anelectrical connection with the coil whereby an electrical current ofhigh tension is passed through the coil, and the latter protected by thewater-conducting pipe which it incloses.

3. The combination in an electrical heater of a reservoir, a U-shapedpipe having legs the longer arm, a coil of high resistance wound incontact with said covering and inclosing the pipe, plates extendingbetween the legs of the pipe and having opposite ends insulatedtherefrom one of said ends securing the ends of the coil, and screwsengaging the plates between their ends, and electrical connectionsthrough which an electrical circuit is established through the coilwhereby a circulation of water is produced within the coil andreservoir,and a discharge-faucet connect-- ing with the heating-pipe.

4. A water-heater consisting of a U-shaped pipe, the upper ends of whichextend into a reservoir, one of said ends projecting above the other, aninlet-pipe connecting with the shorter branch, and a discharge-cock withthe longer branch, the thin mica casing surrounding the pipe, a singlecoil of high-resistance wire wound upon said insu-latingcovering withthe turns out of contact'with each other, clamps extend in g between thelegs of the pipe, having one end to secure the ends of the coil againstthe mica and the other end extending to and clamped against, andinsulated from, the opposite leg of the coil, and connections by whichan electrical circuit through the Wire is completed.

In witness whereof we have hereunto set our hands.

MILTON H. SHOENBERG. HENRI LEVY.

\Vitnesses:

S. H; NOURSE, CHAS. E. TOWNSEND.

